7. What is NOT a function of a cell membrane? a. The cell membrane protects the cell.
b. The cell membrane controls expression of DNA in the cell.
c. The cell membrane controls what enters and exits the cell.
d. The cell membrane is important to cell signaling or communication

What substance is the most acidic. lemon juice. tomato juice. sodium hydroxide. water

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods. c. it shows that these organisms share the same habitat. d. it provides evidence that these organisms suffered a genetic mutation.

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.